FieldSmart
®
Fiber Active Cabinet (FAC) 400
Installation Manual
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Proprietary Information: Not for use or disclosure except by written agreement with Clearfield.
124
Checking the Heat Exchanger
Check the heat exchanger for proper functioning at least once a year.
•
Verify that no fan failure ENV alarms are present on the Clearfield equipment.
• Verify fan operation, including visual inspection the following:
CAUTION!
Always disconnect power to the heat exchanger prior to servicing.
• Verify that all fans are spinning with no obstructions or odd noises.
• Verify that the heat exchanger is secured to the cabinet and all gasket material is intact and adhered to the cabinet
door surface.
Check the heat exchanger for required cleaning based on the environmental conditions (typically once a year).
• Verify that no debris is blocking the inlet and outlet vent screens. Place a piece of paper against the inlet vent and verify
that the paper is drawn in; place a piece of paper against the outlet vent and verify that the paper is blown out. Use a
whisk broom or other device to clear the vents if debris is present.
• Use a soft bristle brush to remove dust or debris from the fans and heat exchanger core as needed.
Note:
If available, you may use low pressure compressed air (up to 30 PSI) in addition to, or in place of, a soft bristle
brush. Compressed air should only be used with cabinet doors closed and only on the external sides of the heat ex-
changer core. Be sure to use appropriate eye protection.
• For more extensive cleaning, you can remove the exterior heat exchanger cover (by removing the two screws at base of
the cover) and the individual cover plates behind the main cover.